2			6		3
	6
		1			4
6			3
				4
4		6			5

Difficulty: Very easy (0)

		3
	2			4
		2		1	6
5	3		2
	4			5
			1

Difficulty: Super easy (0)

		6		5
2
				6
	1
					3
	3		6

Difficulty: Easy (0)

5	2	4
		5
			5
			1	3	5

Difficulty: Super hard (51)